Home / 12,285.41-18,421.63-5,356.13

Finding the Fourth Proportional to 12,285.41, 18,421.63 and 5,356.13

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Solution

The fourth proportional to 12,285.41, 18,421.63 and 5,356.13 is: 8,031.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285.41 : 18,421.63 = 5,356.13 : x
  2. Step 2: Convert to fraction form
    12,285.41/18,421.63 = 5,356.13/x
  3. Step 3: Cross multiply
    12,285.41x = 18,421.63 × 5,356.13
  4. Step 4: Simplify right side
    12,285.41x = 98,668,539.59
  5. Step 5: Solve for x
    x = 98,668,539.59/12,285.41
  6. Step 6: Final answer
    x = 8,031.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.